Speaker



FIG. 1 is a perspective view of the speaker showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the views are for the purpose of illustrating unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 